There was at least one (probably more) paltry DOOM map mods depicting Columbine High School. Not finished products, very poorly done, but enough to fulfill Alito's claim.
In the spirit of the reference, there was a high-quality simulation of the JFK assassination, with the user acting as Oswald. Made a big splash of outrage in the news and was soon pulled (the contest to reenact "the shot" didn't help). It's still available if you look.
BUT...keep in mind endless movies & books depicting gratuitous violence. Alito hasn't articulated a difference on "freedom of speech" grounds.
In the spirit of the reference, there was a high-quality simulation of the JFK assassination, with the user acting as Oswald. Made a big splash of outrage in the news and was soon pulled (the contest to reenact "the shot" didn't help). It's still available if you look.
BUT...keep in mind endless movies & books depicting gratuitous violence. Alito hasn't articulated a difference on "freedom of speech" grounds.